Printing telegraphy



Nov. 18, 1930. E. E. KLEINSCHMIDT 0 PRINTING TELEGRAPHY Original Fil edMarch 7, 1922 '2 Sheets-Sheet 1 Ja ATTORNEYS Patented Nov. 18, 1930UNITED STATES PATENT OFFICE EDWARD E.'KLEINSCH1@ID'I' OF CHICAGO,ILLINQIS, Assrenon, BY mn'sNEnssIGN- MENTS, T TELETYI'E CORPORATION, orCHICAGO, ILLINOIS PRINTING TELEGBAPHY Application filed March 7,1922,Serial No. 541,745. Renewed December 1, 1928.

In an application, Serial Number 432,564, filed December 22, 1920,issued Dec. 8,1925,

' as UnitedStates Patent No. 1,564,121, a receiving unit for printingtelegraphs is shown and described, particularly applicable to the Baudotor like systems, in which the usual distributor head is omitted, and arotatable member, .coacting with movable members, substituted, thuseliminating the distributor brushes which always are a source of serioustrouble and of large expense. v

The present invention is an improvement upon the receiving unitdisclosed in this application. -It has for its particular object a newarrangement of a modified rotatable member, coacting with its movablemembers to, in turn, close thecircuits for the selector magnets. These,thereupon, cause the shifting of the selector bars and thereby permitthe pull bars of a telegraph printer to assume operative positions whichresult finally, in the actuation of printing means or-the performance ofany of the mechanical functions of a telegraph printer.

A particular object of the invention refers to the employment ofindividual latches for the circuit closing devices of the selectormagnets, in order to store line impulses during the actual printingoperation, and another object is the arrangement of means for properorientation of the releasing means of the rotatable member, in relationto the receiving of the firstimpulse and so establish cyclicsynchronism.

A further object relates to novel means for shifting the selector barsand permitting the storing of impulses while the printing of a charactertakes (place and causing the stored impulses to become effective as soonas the printing of a character or the performance ofv a mechanicalfunction of the telegraph printer is completed. 7

The drawings which disclose features not particularly set forth in theforegoing statement of invention, show in Fig. 1, a diagram of theelectrical circuits, Fig. 2, is a modified circuit including a polarrelay, Fig. 3 a front elevation of the rotatable member and itscooperating parts, Fig. 4, a plan View of the devices, shown in Fig. 3,Fig. 5, a front elevation of one form of a selector unit, Fig. 6, a planview of the device shown in Fig. 5, 7, a front elevation of a modifiedform of a selector unit, and Fi 8, a plan view of the device shown inFig.

Operating mechanism Fig.

touching either of the contact points 13 and 14. The marking contact 13may be conductively connected to a circuit containing a magnet 15 and asource of electrical energy 16. Another form of connection for magnet 15is disclosed in Fig. 1, in which the polarrelay is eliminated and asource of electrical energy for magnet 15, arranged at the sendingstation, similar to the arrangement, eiausing the energization of polarrelay 11,

Magnet 15, which may be termed the start ing magnet, is normallyenergized and-attracts its armature 17, against the tension of' theretractile spring 18 and, when not energized, permits spring 18 to holdarmature 17 against the adjustable stop 19. Armature 17 rocks on a shaft20, and its arms 21 form a bell-crank-like structure. The ends of arms21, remote from shaft 20, are connected by auniversal bar 22, and themovement of arms 21 is limited by a stop pin 23.

- The universal bar 22, during the period of energization of magnet 15,rests against the ends of-the middle arms 24 of a plurality of T-shapedlevers, all pivoted on a. common shaft 25 and held under tension ofsprings 26, not only against universal bar 22, but also by means of arms27, against the periphery of a rotatable member 28. Member 28 consistsof a plurality of cam discs 29, secured togetheir and provided withnotches 30, spirally staggered around the periphery of member 28, so asto insure succession of the effects, caused by the dropping of the endsof levers 27 into notches 30.

The entire member 28 is frictionally carried on a shaft 31, continuallyrotated by the other side of source 79 to contact point means of anysuitable driving means 32. A helical spring 33 and a collar 34 permit ofregulation of the frictional drive. A special disc 35 of member 28, isprovided with a radially extending lug 36, having a pin 37 adapted toengage a rocking latch 38, pivoted to a bracket 39, adjustably carriedon the 1 frame of the apparatus.

The rocking movement of latch 38,toward pin 37 is limited by means of astop pin 40. A bail comprising arms 41, 42 and cross-piece 43, integraltherewith, is pivoted on shaft 25, and arm 42 is provided with anangularly extending lever'arm 44, havin a shoe 45, adapted to be engagedby pin 3%, for a purpose hereinafter set forth. The movementof arm 42 islimited by a stop pin 46, located in front of arm 42. A series ofcontact springs 46 to 52, inclusive, are arranged behind the T-shapedlevers, and are capable of engaging stationary, adjustable contactpoints 53 to 59, inclusive, when pressed rearwardly by the insulatedends to 65, inclusive', of the arms 66 of the T-shaped levers.

The free ends of the four contact springs 46 to 49, inclusive, areadapted to be held by latches 67, under tension of springs 68, and eachhaving an arm 69, arranged to be engaged on the rearward movement ofcross: piece 43 of the. bail, already mentioned. Latches 67 are providedwith insulated endpieces 70, having a step at the end and an end-face71. The ends of the contact springs 46 to 49, inclusive, rest in thestep of the end-pieces 7 0, when the contacts are open, but on the endfaces 71, should contacts have been closed, as hereinafter described.

An insulated piece 72 connects contact springs 51 and 52, so that thesame are jointly acted upon by the insulated end of the correspondingT-shaped lever. The five contact points 53 to 57, inclusive, areelectrically connected through selector magnets 73 to 77, inclusive, inparallel to conductor 78, shown in broken lines in the diagram, Fig. 1,

and forming one-leg of a local circuit, in

cluding a source of electrical energy 79. The other leg 80, shown insolid lines, leads from 59, in turn, to contact springs 46 to 52,inclusive. all arranged in parallel, and to contact points 53 to 58;inclusive. Contact points 58 and 59' are connected to contact springs81, 82, of a contact device, adapted to close acircuit to operatingmagnet 83, such as disclosed in application, Serial Number 530,880,filed January 21, 1922 and issued as United States Patent #1,564,422,Dec. 8, 1925. The closing of contact springs 81, 82 is accomplished bymeans of pull-rod 84, actuated by armature 85, of operating magnet 83.One end of pull-rod 84 presses contact springs 81, 82, together, whenthe other end 86, is engaged by armature 85, but contact spring 82 isimmediately released, at the end incline 87, disengages from armature85, and.

contacts 81, 82 are again opened.

Operation The normal, or position of rest of the organization of parts,shown in Figs. 3 and 4, is preconditioned by the continuous rotation ofdriving means 32. Rotatable member 28 is stationary, though undertension to rotate, on account of its frictional arrangement on shaft-31, but held from rotation by pin 37 locked against latch 38. This latchis secured by head 88, oflever 89, under tension of spring 90 andnormally engaged by bail 22 of armature 17. The stroke of lever 89toward latch 37 is limited by stop pin 91.

Magnet 15, being in a normally closed circuit and, therefore, energized,in attracting its armature 17, and holding one of the arms 21 againstpin 23, looks all T-shaped levers, by means of the universal bar 22.Lever 89 of latch 38, thereby holding pin 37, and preventing rotation ofmember 28.

The breaking of the line circuit, incidental to the transmission ofsignaling impulses, results in theretraction of armature 17 and theremoval of universal bar 22 from the five T- shaped levers and thelocking lever 89. Latch 38 can no longer withstand the pressure of vpin37, under its tendency to rotate, and member 28 is permitted so to do,at a speed somewhat faster than the speed of the transmitter at thesending station. It is thus started and stopped, once at eachrevolution, to maintain cyclic synchronism, a procedure now. Well knownin the art.

Pin 37 in its position of rest also engages shoe 45 of lever 44, and itsrelease from latch '38, results in the release of shoe. 45 and theremoval .of cross-bar 43, integral with lever 44, from the ends of arms69, of the four latches 67, adapted to lock the contact springs 46 to49, inclusive. The springs 68 give latch ends 70 a bias toward the endsof the contact springs which rest on the steps of the latches. Latch '38and lever end 88 are immediately returned to normal, by spring 90,acting on lever 44, so that bail 22 is at liberty to return to normal atthe next closure of the line circuit, and will do so on the closure ofany break occurring during one revolution of member 28.

On account of the cyclic synchronism, existing between the transmitterat the sending station and the distributor at the receiving station,successive signaling impulses are now received in time-d relation. Inview of the fact that the present system is based upona normally closedline circuit, no current on the line identifies a marking impulse, andcurrent on the line, a spacing impulse. In other words, the opening ofthe line circuit,

or a marking impulse, results in certain positive manifestations and theclosing of the line has no effect, except the return of bail 22 tonormal and the prevention of the operation of any parts engaged thereby.

A special start impulse originating at the sending station, in thepresent system, i. e.,

an opening of the line circuit, precedes the reception of the signalimpulses and results in the preliminary operations just described. Thesignal impulses, following the start impulses, must of course, coincidewith the falling of levers. 27 into notches 30 and are received insequence. Wherever a break of the line-circuit, in this case a markingimpulse,

permits a lever'27 to fall into its'notch, one of thecorrespondingcontact springs 46 to 49, inclusive, will be brought incontact withits contact points 53 to 56, inclusive, but-no electricaleffect takes place at this time; The selectedsprings are displaced andlocked; up in displaced position by end faces 71 of latches 70, in frontof the ends of springs 46 to 49, inclusive. When the T-shaped lever,control ling contact springs 51 and 52, closes contacts58and 59, whichoccurs at the same time that the fifth impulse contact spring 50 isoperated, then all selector magnets whose contacts have been closed,will be energized simultaneously, as hereinafter described. At thecompletion of one revolution of member 28, pin 37, in reaching itsposition of rest, engages head of lever 44, raises crossi bar 43,returning all displaced latches 67 to normal position, and causing theends of the displaced springs 46 to 49, inclusive, to again rest in thesteps of insulated ends- Con-' tact between all springs and all contactpoints is again broken.

a An inspection of the diagram, Fig. 1, shows that allelectro-magnetical manifestations take place in a localcircuit-havingasingle source of energy, the battery 7 9. Marking impulses coming overthe hue result in the displacement of certain of the contact springs.Two notches 30, cooperating with T-shaped levers displacing contactsprings 50 and 51, corresponding to. the fifth signala ing impulse andthe so-called sixth, or operating impulse, are arranged side by side onthe periphery of member 28, and, therefore, springs 50 and 51 aresimultaneously displaced. Contact spring 52, is also simultaneouslydisplaced with springs 50 and 51, by means of insulated push piece 72.Contact springs 46 to 50,'inclusive, may connect to conductors leadingto selector magnets 73 to 77, inclusive. and, in turn, to conductor 78,leading to the positive side of battery 79. Contact springs 51 and 52may extend to contact points 58 and 59. of which contact point 59. overconductor 80. is connected to the negative side of the battery, whilecon-' tact point 58 is connected to operating magnet 83 and overconductor 78 to the positive side of battery '79. An operating contact,com-" prising contact springs 81 and 82, is bridged ajciz'oss theconductors leading to contact points 58 and 59. Operating magnet 83actuates .a-contact closer 84, for contact springs 81, 82.;by'means ot'armature 85, engaging it at its front end, while its rear end closescontact springs 81 and 82. At the end of the stroke of armature 85, andend of travel of member 84. the front end 86 of this member climbs upincline 87, until it becomes disengaged from armature 85. whereupon the.ten- Sion of contactspring 82, in opening the operating contact, pullsback member 84.

It will now b'eseen that the successive operation of the T-shapedlevers, may or may; not result in closing of contact springs 46 to 50,inclusive. to contact points 53 to 57, inclusive, but it will at alltimes result in closing of con ta ct springs 51 and 52, to theirrespective contacts'58 and 59. As stated before, contact springs 46to49, inclusive, may or may not be locked up, contact spring 50 mayreceive a marking or spacing impulse, not be displaced. The sixth lever,not being T-shaped', as the other five levers, is not controlled 'byarmature 17 and its universal bar 22, but at all times operated by itslever end 27, falling into its notch 30, on member 28 at or near thecompletion of a revolution. It

will, therefore, be'se'en that each revolution of member '28, starts onan impulse deenergizing magnet '15, and. stops at the closing and reenerizin and de-ener izin of oJeratin D b g magnet 83. x

The selector units, disclosed in Figs. 5, 6,

i. e. may or may 7 and 8, are of greatsimplicity and comprise Ithe'selector magnets 73 to 77, inclusive, five in number in a systememploying the Baudot code, anda like number of selectoror com binationbars, adapted to permit the actuation of pull bars of a telegraphprinter, all as disclosed in application Serial Number 522,398, filed-December 14, 1921. issued as United States Patent 1,448,750, Mar. 20,1923.

F In Figs. 5 and 6. the selector magnets are indicated'at to 7 7,inclusive, and the selector bars at to 114, inclusive. Each magnet isprovided with an armature to 119, inclusive, and each armature carries alocking member to 124, inclusive. bar is-provided with one tooth-shapedholding notch and four recesses, 126,127, 128 and 129. The notch in onebar and the recesses 'in the remaining four bars, are all aligned atright angles to the bars, the toothshaped notches, one in each bar, arestaggered along the five bars. so that there are fiv'e groups, eachcontaining one tooth-shaped notch and four recesses. The selector barsare slidable in suitable bearings of standards 130,

Each selector 131, each bar having reduced end portions.

holding the bars, when displaced, under tension to return to normal. Themeans for disv placing the bars in Fig. 5, include a bell-crank 135,having a bail or cross-bar 136, engaging a special notch 137, and aleverarm 138, secured to the operating shaft of the telegraph printer,shown in application, Serial Number 522,398, issued as United StatesPatent #1,448,7 50, so that all the selector bars are shifted to theleft, as viewed in Fig. 5, and locked in this position by the lockingmembers 1 20 to 124, respectively, each engaging its tooth-shaped notch125. The top edge of each selector bar is provided with code notches139, which,'in groups of five, aligned at right angles across the bars,represent the code arrangement for any letter, figure or symbol and forany mechanical function of the telegraph printer, as now well known inthe art. The pull bars 140 are capable of dropping in a group. of fivealigned code notches 139, and while therein,'are operated by theprinting" magnet of the telegraph printer, in the usual manner.

Figs. 7 and 8, disclose a modified arrangement of the selector magnetunit. The essential difference, in comparison with the arrangementshownin Figs. 5 and 6, consists in the direct shifting of the selector barsby means of the armatures 141, against the tension of the armaturesprings 142 and the selector bar springs 143. Each bar is provided withanotch 144, in which the end of the armature 141 is located for shiftingthe selector bar, when a selector magnet is energized. The selector barsare held in shifted position by lock bar 145, having a lmife edge,capable to engage a similarly formed notch 146, on the upper edge of theselector bars and operated with one of the pull bars of the telegraphprinter.

It will be noted that in the present invention the energization oftheselector magnets and the shifting of the selector bars takesplace atoneand the same instant of time, coincident with the closure of contactsprings 51, 52, and their respective contact points 58, 59, and thatimpulses may be stored in the contact springs of the selector magnetswhile the actual printing of the preceding character takes place.

What is clainred as new, is r 1. In a selective system, rotary means,means for arresting rotation of said rotary means, means for adjustingthe position of said arresting means while said rotary means is inrotation to change the position in which said rotary means is brought torest thereby, and means controlling said arresting means to initiaterotation of said rotary means.

'2. The combination as set forth in claim 1 in which said rotary meanscomprises a rotary distributing member together with 9.

selecting mechanism controlled by said distributing member.

3. A distributor for selective systems comprisin a rotary member,start-stop means for initiating rotation of said rotary member and forarresting rotation thereof at the end of each revolution, and means foradjusting the position of said start-stop means to change the startingand stopping position of said rotary member while it is rotating.

4. The combination as set forth in claim 3, in which said start-stopmeans comprises in electro-magnet and a movable stop mem- 5. Thecombination as set forth in claim 3 together with a selecting mechanismcontrolled by said distributor'at fixed relative points of the rotationof said member, and in which the adjustment of said start-stop meanseffects orientation of said distributor with respect to said selectingmechanism.

6. A mechanism selectively responsive to received code combinations ofmarking and spacing conditions comprising means operating in definitelytimed relation with respect to said received conditions, a plurality ofselecting mechanical members successively conditioned for movement bysaid means, and

'means for preventing all substantial movement of said selecting membersexcept when marking conditions are received.

7. The combination as set forth in claim 6 together with meanscontrolled by said last mentioned means for initiating the operation ofsaid first mentioned means at the beginning of the reception of eachcodecombination.

8. The combination as set forth in claim 6 in which said first mentionedmeans comprises a rotary cam shaft, and in which said last mentionedmeans comprises a single electro-magnet controlling said selectingmembers by solely mechanical means.

9. A mechanism selectively responsive to received code combinations ofmarking and spacing conditions comprising an electromagnet, rotary meansinitiated in rotation by the actuation of said electro-magnetimmediately preceding the reception of each of said code combinations,and arrested in rotation immediately after the reception of each of saidcode combinations, and a plurality of electrical circuit closing contactmembers selectively actuated in accordance with said received codecombinations under solely mechanical andjoint'control of said rotarymeans andsaid electro-magnet.

10. The combination as set forth in claim 9 together 'with means forlocking certain ones of said contact members in closed posit-ion.

11. The combination as set forth in claim 9, together with means forlocking certain ones of said contact members in closed position, and.means for releasing said locking means to permit said contact members torestore to open position simultaneously after the reception of each codecombination has been completed.-

12. The combination as set forth in claim 9 together with a selectormagnet individual to each of said contact members and controlledthereby.

13. The combination as set forth in claim.

9 together with an electrical circuit closing contact member actuatedunder the control of said rotary member at the end of the reception ofeach code combination, and an operating magnet controlled by said lastmentioned contact member.

14. A selecting mechanism comprising a plurality of selector magnets, anarmature individual to each of said magnets, a plurality of notchedselector bars held in unactuated position by said armatures, means forenergizing said magnets to permit movement of said bars to actuatedposition in accordance with a received code combination of electricalimpulses, means for restoring said bars to unactuated position, andmeans for energizing said magnets in accordance with a succeedingreceived code combination of impulses before said selector bars havebeen restored from said actuated positions assumed in response to thepreced ing code combination.

15. The combination as set forth in claim 14: in which each of said codecombinations is composed of permutations of successively receivedimpulses, together with means for simultaneously energizing said magnetsin accordance with said code combinations.

16. The combination as set forth in claim 14 in which each of said codecombinations is composed of permutations of successively receivedimpulses, together with means for simultaneously energizing said magnetsin accordance with said code combinations, and means for simultaneouslyde-energizing said magnets after the complete reception of each codecombination.

17. A selective mechanism comprising a plurality of movable selectormembers, a

plurality of selector magnets controlling said selector members,-meansfor condition- 17 in which said first mentioned means comprises aplurality of electrical contact members, and locking means to lock saidcontact members in closed position in response to 17 in which said firstmentioned means comprises a plurality of electrical contact members,and'locking means arranged to lock all of said contact members exceptthe one controlled by the last condition of each combination in responseto the received code combinations of conditions.

21. The'combination as set forth in claim 17 together with selectablemeans controlled by said" selector members and operating means 'for saidselectable means. e

22. The combination as set forth in claim 17 together with selectablemeans controlled by s'aid selector members, operating means for saidselectable means, and means actuated after the reception of each codecombination for causing functioning of said operating means.

23. The combination as set fort in claim 17 together with selectablemeans controlled by said selector members, an operating magnet, 21contact member under solely locai control operated after the receptionof each code combination for causing functioning of said operatingmagnet, and locking means for said operating magnet to insure properoperation of said selectable means.

24. The combination as set forth in claim 17 together with selectablemeans controlled by said selector members; operating means i for said'selectable means; and restoring means for said selector members actuatedf by said operating means after the operation of said selectable meanshas been complete- 25. A receiving selector. comprising a single magnet;a shaft and means for rotating the same, means controlled by theenergization of said magnet for mechanically stoppingth'e rotation ofsaid shaft and by the de-energization thereof for permitting rotation ofsaid shaft; 'means actuated by said shaft duringthe rotation. thereoffor successively setting a plurality of selector members; and meanscontrolled b the energization of said magnet for inter erin-g with thesuccessive setting of said selector memb'i's' by said shaft actuatedmeans.

26. A mechanism selectively responsive to received code combinations ofmarking and spacing conditions comprising means operating in definitelytimed relation with res ect to said received conditions, a plurality 0selecting members successively conditioned for operation by said means,power means for successively operating said selecting members as theyare conditioned for operation and means responsive to codecombinations-of impulses for preventing or permitting operation of saidselecting membersby said power means as they are conditioned foroperation by said first mentioned means.

27. A mechanism selectively responsive to received code combinations ofmarking and spacing conditions comprising a rotating shaft operating indefinitely timed relation with respect to said received conditions, andprovided with a plurality of notches positioned about said shaft, aplurality of selector members in operative relation with said shaft, onefor each of said notches arranged to be successively moved into saidnotches as said notches come opposite their respective selector andmeans responsive to code com binations of received impulses forpreventing from moving or permitting said members to move, into saidnotches.

28. A mechanism selectively responsive to received code combinations ofmarking and spacing conditions, comprising a normally non operatingrotating shaft operating in definitely timed relation with respect tosaid received conditions, and provided with a plurality of notchespositioned about said shaft, a plurality of selector members inoperative 'relation with said shaft, one for each of said notches,arranged to be successively moved nto sa d notches as each notch comesopp oslte its individual selector, means responsive to code combinationsof received impulses for tiated inrotation by the de-energization ofsaid electromagnet immediately preceding thereception of each of saidcode combinations, and a plurality of electrical circuit closing contactmembers (selectively actuated in accordance with said received codecombinations under solely mechanical and joint control of saidrotarylmeans and said electromagnet.

30. A mechanism selectively responsive to received code combinations ofmarking and spacing conditions, comprising a normally energizedelectromagnet, a rotating means initiated into rotation by thedeenergization of said magnet immediately preceding the reception ofeach of said code combinations, and arrested from rotation immediatelyafter the reception of each of said code combinations, a plurality ofselector mechanisms successively conditioned for operation by saidrotating means, power means for operating each of said selectormechanisms as they are conditioned for operation, said electromagnetcontrolling the application of said power means for operating saidselector mechanism in.accordance with the received code combinations ofimpulses as each selector is conditioned by said rotating means.

31. A mechanism selectively responsive to received code combinations ofmarking and "spacing conditions, comprising a normally energizedelectromagnet, a rotating means initiated into rotation by thedeenergization of said magnet immediately preceding the recep'tion ofeach of said code combinations and arrested from rotation immediatelyafter the reception of each of said code combinations, a plurality ofselector mechanisms successively conditioned for operation by saidrotating means, power means for operating each of said selectormechanisms as they are conditioned for operation, said electromagnetcontrolling the operation of said selector mechanism by said power meansin accord ance with code combinations of impulses as each selector isconditioned by said rotating means, a plurality of electrical circuitsclosed 'by said selector members in operated positions and means forlocln'ng said selector members to maintain said circuits closed.

32. A receiving selector comprising a single magnet, a shaft, means forrotating said shaft, means controlled by the energization of said magnetfor mechanically stopping the rotation of said shaft and by thedeenergization thereof for permitting the rotation of said shaft, aplurality of selector members in operative relation with said shaft,said shaft being provided with notches for permitting successiveoperation of said selector members, power means tending to operate saidsebeing provided with notches for permitting successive operation ofsaid selector members, power means tending to operate said selectormembers, means controlled by, the energization of said magnet forinterfering with the successive operation of the selector members bysaid power means as said selectors are conditioned by said shaft, andmeans for restoring the actuated selector members to unactuatedposition.

- 34. A receiving selector comprising a single magnet, a shaft, meansfor rotating said shaft, means controlled by the energization of saidmagnet for mechanically stopping the rotation of said shaft and by thedeenergization thereof permitting the rotation of said shaft, said shaftbeing provided with notches for permitting successive operation of saidselee tor members, power means for operating said selector members tooperated position as they are conditioned for operation by said shaft,means controlled by the energization of said magnet for interfering withthe successive operation of the selector members by said power means, aplurality of selector means controlled by the energization of saidmagnet for mechanically stopping the rotation of said shaft and by thedeenergization thereof permitting the rotation in said shaft, aplurality of selector members in operative relation with said shaft,said shaft being provided with notches for permitting successiveoperation of said selector members, power means tending to operate saidselector mem bers to operated position, means controlled by theenergization of said magnet for interfering with the successiveoperation of the selector members by said power means as they arereconditioned for operation by the shaft, a plurality of selectormagnets, means controlled by said selector members for variablyoperating said magnets, selector bars operated in accordance with theoperationof said selector magnets, means for restoring said bars tounactuated positions and means for energizing said magnets in accordancewith succeeding received code combinations of impulses before theselector bars have been restored from their actuated positions assumedin response to the preceding code.

36. A mechanism selectively responsive to received code combinations ofmarking and spacing conditions, comprising start stop means operating indefinitely timed relation with respect to said received conditions, a

plurality of selecting members normally held from operation andmechanically and successively conditioned for movement by said startstop means and means for preventing substantial movement of each of saidselecting members as it is conditioned for movement except when markingconditions are received, said last mentioned means being responsive to amarking condition for startin said start stop means into operation.

37 A mechanism selectively responsive'to received code combinations ofmarking and spacing conditions in which said marking,

condition is identified by no current and the spacing condition bycurrent in the system comprising a rotatable shaft normally held fromrotation, means responsive to a marking condition for releasing saidshaft, selector members held from operation by said s haft andsequentially released thereby in timed relation with said received codecombination of marking and spacing impulse conditions and meansresponsive to said impulse conditions for successively permitting orpreventing the operation of each of said selectors as it is conditionedfor operation by said rotatable member in accordance with whether theimpulses received are marking or spacing impulse conditions.

38. A mechanism selectively responsive to received code combinations ofmarking and spacing conditions comprising a normally energizedelectro-magnet, a. rotary means normally held from rotation, meansrespon-i sive to the deenergization of said electro-magnet in responseto astart condition preceding each code combination for releasing saidrotary means to rotate, selector mechanism normally held from operationand sequentially released for. op-

eration by said rotary means in timed relationwth said receivedconditions and means responsive to the energization and deenergizationof said electro-magnet in accordance with said received codecombinations of conditions for correspondingly preventing or permittingthe operation of each of said selector members as it is released by saidrotary means.

39. A mechanism selectively responsive to a received code combination ofmarking and spacing conditions comprising means operated in definitelytimed relation with respect to said. received conditions, a plurality ofselecting members normally held from operation and selectively releasedfor operation by said first mentioned means in timed relation with saidreceived conditions, and electro-magnetic means responsive to said received code combinations of conditions for selecting members as they arereleased by said first means, electro-magnetic means responsive to saidreceived code combinations of conditions, means responsive to thedeenergization of said magnet for starting said start stop. means intooperation, and means responsive to the deenergization of said magnet 1nresponse to received lmpulse conchtions for preventmg sa1d selectormembers from operating as they are successively rev leased by said firstmeans.

41. A mechanism selectively responsive to received code combinations ofmarking and spacing conditions comprising start stop means operating indefinitely timed relation with respect to said received conditions;means responsive to a marking condition for releasing said start stopmeans to operate, a plurality of selecting members normally held fromoperation, and mechanically and successively conditioned for movement bysaid first means; and means whereby said impulse responsive meansoperates to prevent substantially any movement of said selecting membersas they are released except when marking conditions are received.

42. A mechanism selectively responsive to received code combinations ofspacing and marking conditions comprising a start stop rotary cam shaftoperating in definitely timed relation with respect to said receivedconditions; a plurality of selecting members normally non-operating andmechanically and successively conditioned for movement by said rotarycam shaft; electro-magnetic means responsive to said code combinationsof marking and spacing conditions; and means responsive to thedeenergization of said electro-magnetic means permitting said cam shaftto rotate and permitting said conditioiied selectin members to operate.1

Signed at Brodklyn, in the county of Kings and State of New York, this6th day of March, 1922. EDWARD E. KLEINSCHMIDT.

